Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
RNA and Transcription Chapter 13 What is RNA? ________________________ Can be thought of as a ________________________ of a piece of ____________ What is RNA’s job? Recall that… - ____________________________ contain a code for ______________ that determine our traits ________________________________________ Protein synthesis __________________________________ Proteins are made up of __________________ Why RNA? RNA ____________________________________________ (via the nuclear membrane’s pores) and carry DNA’s code to the ribosomes Ribosomes ______________________________ based on the RNA code to build the proteins The DNA ____________________________________ and the RNA can travel to do the rest of the work! DNA- Contains the “________________” with all information needed to build a protein. RNA- The “___________”, who works from a “blueprint”, or disposable copy, of the master plan. The cell uses the DNA’s “master plan” to prepare RNA “blueprints”. Structure of RNA ____________ stranded ____________________ Phosphate group Adenine, _____________, Cytosine, Guanine Types of RNA: Messenger RNA (mRNA) – _____________________ to ribosomes for translation. Ribosomal RNA (rRNA) – Ribosomes _________________ ____________________________________. Transfer RNA (tRNA) – ____________________________ ______________________ for protein synthesis. TRANSCRIPTION (RNA Synthesis) Segments of DNA ____________________________ to produce complementary RNA molecules 1. ___________________________ binds to DNA at the promoter site Promotor: Region of DNA that ______________________________________. 2. RNA polymerase ______________________________________________________________ 3. One strand of DNA is used as a template to form a strand of RNA DNA’s _____________ pairs with RNA’s _________________ DNA’s _____________ pairs with RNA’s _________________ Guanine and Cytosine ___________________ 4. RNA polymerase eventually ____________________________________ signaling it to stop transcription 5. _____________________________________________, and travels through the ____________________________________to the ribosome The ribosome will read this code and make proteins from it- a process known as translation (which we will get to later on) RNA is edited, before it gets translated Some parts are ______________ and others are ___________________ Introns- ________________________________ Exons- _________________________ Why? Makes it possible for a single gene to produce __________________________________ Evolution- Small _____________________________ cause dramatic effects on the cellular functioning of genes